102 



been caught at flowers, flying in the bright sunUght, on the college 

 campus. 



Apparently because of the rarity of true gimrce; the Southern 

 and Central Texas form, with a similar larva has been generally iden- 

 tified as gaurce; and true gaurce identified as circce. 



Genitalic slides of two Alabama specimens of gaurce show slightly 

 narrower valves than those shown by two slides of the common Texas 

 species, but the difference is not great, the valves of the Texas species 

 show some variation, and the larvae of both are similar in maculation 

 and possess a caudal horn. With these facts in mind, the authors 

 considered the Texas specimens a race of gaurce, but Mr. Clark con- 

 siders them a distinct species. Occasional Texas specimens may be 

 referable to true gaurcs, as Mr. Clark informs the authors that he 

 possesses a single specimen from Paris, (Northern) Texas with brown- 

 ish secondaries. 



P. deceptiva is similar to gaurce with the primaries tending to be somewhat 

 darker and the secondaries strongly tinged with yellow, similar to juanita, a fact 

 which in the past has caused considerable additional confusion. The larvae of 

 juanita, however, are quite distinct from those of gaurce and deceptiva by not 

 possessing a caudal horn. 



Type localities and number and sexes of types: Holotype $, Harris Co., 

 June; Allotype $, id., June; 2 $ Paratypes, id., 24-30 June, and Hastings, June 

 '98; 2 $ Paratypes, Harris Co., June, and Kerrville, June '00, in Barnes Collec- 

 tion; 2 $ Paratypes, Harris Co., No. 874, and Blanco Co., No. 3614, loaned to 

 the authors by Mr. B. Preston Clark and returned to the Clark Collection; all 

 Texas. 



SYNTOMIDAE 



Pygoctenucha pyrrhoura Hulst. 



1881, Hulst, Bull. B'klyn Ent. Soc, HI, 77, pi. IV, f. 4, Ctenucha. 



Notes made by the junior author read : "Do not think this {P. 

 terminalis) same as male type "Ctenucha" pyrrhoura Hulst in N. Y. 

 The wings of the type are much narrower and differently shaped, 

 smaller, also lack most of the blue sheen, being duller purple-gray. 

 The fringes of the primaries are zvhite, not as in our specimen. Veins 

 4 and 5 of the primaries are shortly stalked in pyrrhoura and free 

 in terminalis." 



Hampson states that the "cilia" of the primaries of terminalis 

 are white. Arizona specimens possess blackish-brown "cilia". It is 



